public class DoubleLinkedListSimpleTest {
  public static void main(String args[]) {

    DoubleLinkedListSimple list = new DoubleLinkedListSimple();

    list.insertHead(new Integer(1));
    list.insertHead(new Integer(3));
    list.insertTail(new Integer(4));
    System.out.println(list);

    list.removeAfterNode(list.getHead());
    System.out.println(list);

    list.removeAfterNode(list.getHead());
    System.out.println(list);

    list.removeAfterNode(list.getHead());
    System.out.println(list);
    
  }
}